Expert Group Member 3:
Consider an episode of Master Chef (or similar).
Identify the physical and chemical changes that take place.
Draw a simple diagram or sketch (or find one!) to show at particle level what is occurring in each.
Construct a table to compare physical and chemical changes. Include your examples in the table.
Describe how you could demonstrate the difference between physical and chemical changes to primary school aged children.
MASTER CHEF - Expert group members for Question 3 - What did you find out?
Use a table to show the difference between physical and chemical changes of materials.
Can you think of any everyday examples that might be relevant to your students?
If I was explaining physical change to primary school students water is a hard one to pass up. It's the easiest substance to show its form as a solid, liquid or gas. Show a picture of how the atoms would be formed in ice (solid), a glass of water (liquid) and steam (gas).
For explaining a chemical change, I would demonstrate mixing a cake and using heat to bake the cake. The different substances of milk (liquid), flour (solid), sugar (solid), eggs (liquid)? Combine and chemical reactions occur and once the mixture is in the oven, a catalyst of heat is used to form a new substance.
(Billie-Jean RYALS, External, 10-08-15)
Consider an episode of Master Chef (or similar).
Identify the physical and chemical changes that take place.
Draw a simple diagram or sketch (or find one!) to show at particle level what is occurring in each.
Construct a table to compare physical and chemical changes. Include your examples in the table.
Describe how you could demonstrate the difference between physical and chemical changes to primary school aged children.
MASTER CHEF - Expert group members for Question 3 - What did you find out?
Use a table to show the difference between physical and chemical changes of materials.
Can you think of any everyday examples that might be relevant to your students?
- A new substance is formed
- Making or breaking of bonds between atoms
- Energy is either given off or absorbed
- Are not reversible, it would take extreme measures to revert back to the original substance, if at all.
*Here are some resources for chemical changes in the kitchen
Found this website with kitchen chemistry information and resources
Kitchen Chemistry
Heston Blumenthal – 3 star Michelin chef is inspired by science for the wonderful creations he makes with food
https://www.youtube.com/watch?v=sA34OoZBQOE
Heston Blumenthal’s Kitchen chemistry part 1
https://www.youtube.com/watch?v=IGCagIgV85g
Heston Blumenthal’s Kitchen chemistry part 2
If I was explaining physical change to primary school students water is a hard one to pass up. It's the easiest substance to show its form as a solid, liquid or gas. Show a picture of how the atoms would be formed in ice (solid), a glass of water (liquid) and steam (gas).
For explaining a chemical change, I would demonstrate mixing a cake and using heat to bake the cake. The different substances of milk (liquid), flour (solid), sugar (solid), eggs (liquid)? Combine and chemical reactions occur and once the mixture is in the oven, a catalyst of heat is used to form a new substance.
(Billie-Jean RYALS, External, 10-08-15)